Beam dynamics studies for heavy ion fusion drivers

Friedman, A.; Barnard, J.J.; Celata, C.M.; Craig, G.D.; Hoon, Michiel de; Falterns, A.; Grote, D.P.; Lee, E.P.; Sharp, W.M.; Sonnendrücker, Éric; Haber, I.; Kishek, R. A.

doi:10.1109/pac.1999.794274

Cited by 3 publications

(5 citation statements)

References 3 publications

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“…Considerable work has been carried out characterizing a number of machine and beam errors in the IRE design. [11] One issue is the alignment tolerance of the focusing quadrupoles. Any transverse offsets will kick the beam off-axis, possibly (in combination with non-linear applied fields and image forces) causing emittance growth and in the worst case causing some of the beam to be lost by striking the surrounding walls.…”

Section: Transverse Slice Simulationsmentioning

confidence: 99%

“…Any transverse offsets will kick the beam off-axis, possibly (in combination with non-linear applied fields and image forces) causing emittance growth and in the worst case causing some of the beam to be lost by striking the surrounding walls. In earlier work [11], the magnitudes of random quadrupole offsets were set so that, over the course of the simulation, little of the beam was lost to the walls. …”

Section: Transverse Slice Simulationsmentioning

confidence: 99%

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Progress toward source-to-target simulation

Grote

Friedman

Craig

et al. 2001

Nuclear Instruments and Methods in Physics Research Section A:

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Source-to-target simulation of an accelerator provides a thorough check on the consistency of the design as well as a detailed understanding of the beam behavior. Issues such as envelope mismatch and emittance growth can be examined in a self-consistent manner, including the details of accelerator transitions, long-term transport, and longitudinal compression. The large range in scales, from centimeter-scale transverse beam size and applied field scale-length, to meter-scale beam length, to kilometer-scale accelerator length, poses a significant computational challenge. The ever-increasing computational power that is becoming available through massively parallel computers is making such simulation realizable. This paper discusses the progress toward sourceto-target simulation using the WARP particle-in-cell code. Representative examples are shown, including 3-D, long-term transport simulations of Integrated Research Experiment (IRE) scale accelerators.

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Section: Transverse Slice Simulationsmentioning

confidence: 99%

Section: Transverse Slice Simulationsmentioning

confidence: 99%

Progress toward source-to-target simulation

Grote

Friedman

Craig

et al. 2001

Nuclear Instruments and Methods in Physics Research Section A:

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“…A number of computer simulations of the IRE have been carried out so far to examine its viability [21], [32], [59].…”

Section: The Integrated Research Experiments (Ire)mentioning

confidence: 99%

“…This represents a uniform distribution over an ellipse with semi-axes a and b. From this equation, we find The space-charge field inside an ellipse with a uniform space-charge distribution is given by 32) in which λ is the line charge density of the beam [62]. Substituting these fields into equation 33) in which I = λβc is the beam current.…”

Section: Beam Dynamics In the Presence Of Space Chargementioning

confidence: 99%

Drift compression and final focus systems for heavy ion inertial fusion

Hoon

2001

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“…A typical design for a driver involves the acceleration of multiple very high intensity beams while maintaining the beam quality~Barnard et al, 2001!. Low emittance is needed to enable focusing onto the target, and halo formation must be avoided in order to prevent activation of the accelerator structures Friedman et al, 1999!. At the University of Maryland, we continue to examine these issues using low-cost experiments with scaled electron beams~O' Shea et al, 2001!, filling in an important gap in long-path experiments on intense beams.…”

Section: Introductionmentioning

confidence: 99%

Experiments with space-charge-dominated beams for heavy ion fusion applications

et al. 2002

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A detailed understanding of the physics of space-charge-dominated beams is vital in the design of heavy ion inertial fusion~HIF! drivers. In that regard, low-energy, high-intensity electron beams provide an excellent model system. The University of Maryland Electron Ring~UMER!, currently being installed, has been designed to study the physics of space-charge-dominated beams with extreme intensity in a strong focusing lattice with dispersion. At 10 keV and 100 mA, the beam from the UMER injector has a generalized perveance as much as 0.0015, corresponding to that of proposed HIF drivers. Though compact~11 m in circumference!, UMER will be a very complex device by the time of its completion~expected 2003!. We present an update on the construction as well as recent experimental results.

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Beam dynamics studies for heavy ion fusion drivers

Cited by 3 publications

References 3 publications

Progress toward source-to-target simulation

Progress toward source-to-target simulation

Drift compression and final focus systems for heavy ion inertial fusion

Experiments with space-charge-dominated beams for heavy ion fusion applications

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